<?php

/**
 * @file
 * Tests for the Synonyms module.
 */

/**
 * Base class for all Synonyms web test cases.
 */
abstract class SynonymsWebTestCase extends DrupalWebTestCase {

  /**
   * Fully loaded user object of an admin user that has required access rights.
   *
   * @var object
   */
  protected $admin;

  /**
   * SetUp method.
   */
  public function setUp() {
    parent::setUp(array('synonyms'));

    $this->admin = $this->drupalCreateUser(array(
      'administer taxonomy',
      'administer content types',
      'bypass node access',
      'search content',
    ));
  }

  /**
   * Return last inserted term into the specified vocabulary.
   *
   * @param object $vocabulary
   *   Fully loaded taxonomy vocabulary object
   *
   * @return object
   *   Fully loaded taxonomy term object of the last inserted term into
   *   the specified vocabulary
   */
  protected function getLastTerm($vocabulary) {
    drupal_static_reset();
    $tree = taxonomy_get_tree($vocabulary->vid);
    $max = 0;
    $term = NULL;
    foreach ($tree as $v) {
      if ($v->tid > $max) {
        $max = $v->tid;
        $term = $v;
      }
    }
    $term = entity_load_unchanged('taxonomy_term', $term->tid);
    return $term;
  }
}

/**
 * Test Synonyms functionality of synonyms module.
 */
class SynonymsSynonymsWebTestCase extends SynonymsWebTestCase {

  protected $vocabularies = array(
    'enabled' => TRUE,
    'disabled' => FALSE,
  );

  /**
   * GetInfo method.
   */
  public function getInfo() {
    return array(
      'name' => 'Taxonomy synonyms',
      'description' => 'Ensure that the feature "synonyms" works correctly with taxonomy terms.',
      'group' => 'Synonyms',
    );
  }

  /**
   * SetUp method.
   */
  public function setUp() {
    parent::setUp();

    // Creating vocabularies.
    $this->drupalLogin($this->admin);
    foreach ($this->vocabularies as $k => $v) {
      $name = $this->randomName();
      $this->drupalPost('admin/structure/taxonomy/add', array(
        'name' => $name,
        'machine_name' => $k,
        'description' => $this->randomName(),
        'synonyms[synonyms][' . SYNONYMS_DEFAULT_FIELD_NAME . ']' => $v,
      ), 'Save');
      $this->vocabularies[$k] = taxonomy_vocabulary_machine_name_load($k);
    }
    // Flushing cache.
    _field_info_collate_fields(TRUE);
  }

  /**
   * Test the disabled taxonomy synonyms feature.
   */
  public function testSynonymsDisabled() {
    $this->drupalGet('admin/structure/taxonomy/disabled/add');
    $this->assertNoFieldById('edit-synonyms-synonyms-und-0-value');

    $this->drupalGet('admin/structure/taxonomy/enabled/add');
    $this->assertFieldById('edit-synonyms-synonyms-und-0-value');

    // Making sure that after disabling "synonyms" the synonyms field
    // is no longer available on taxonomy term add page.
    $this->drupalPost('admin/structure/taxonomy/enabled/edit', array(
      'synonyms[synonyms][' . SYNONYMS_DEFAULT_FIELD_NAME . ']' => FALSE,
    ), 'Save');

    $this->drupalGet('admin/structure/taxonomy/enabled/add');
    $this->assertNoFieldById('edit-synonyms-synonyms-und-0-value');
  }

  /**
   * Test the functionality of synonyms.
   */
  public function testSynonyms() {
    $name = $this->randomName();
    $synonym = $this->randomName();
    $parent_synonym = $this->randomName();

    // Creating terms for testing synonyms_get_term_synonyms().
    $synonym1 = $this->randomName();
    $synonym2 = $this->randomName();
    $this->drupalPost('admin/structure/taxonomy/enabled/add', array(
      'name' => $this->randomName(),
      'description[value]' => $this->randomName(),
    ), 'Save');
    $no_synonyms_term = $this->getLastTerm($this->vocabularies['enabled']);
    $this->drupalPost('admin/structure/taxonomy/enabled/add', array(
      'name' => $this->randomName(),
      SYNONYMS_DEFAULT_FIELD_NAME . '[' . LANGUAGE_NONE . '][0][value]' => $synonym1,
    ), 'Save');
    $one_synonym_term = $this->getLastTerm($this->vocabularies['enabled']);
    $this->drupalPost('admin/structure/taxonomy/enabled/add', array(
      'name' => $this->randomName(),
      SYNONYMS_DEFAULT_FIELD_NAME . '[' . LANGUAGE_NONE . '][0][value]' => $synonym1,
    ), 'Add another item');
    $this->drupalPost(NULL, array(
      SYNONYMS_DEFAULT_FIELD_NAME . '[' . LANGUAGE_NONE . '][1][value]' => $synonym2,
    ), 'Save');
    $two_synonyms_term = $this->getLastTerm($this->vocabularies['enabled']);

    // Creating an identical parent term in order to test
    // $parent parameter in our functions.
    $this->drupalPost('admin/structure/taxonomy/enabled/add', array(
      'name' => $name,
      'description[value]' => $this->randomName(),
      SYNONYMS_DEFAULT_FIELD_NAME . '[' . LANGUAGE_NONE . '][0][value]' => $synonym,
    ), 'Add another item');
    $this->drupalPost(NULL, array(
      SYNONYMS_DEFAULT_FIELD_NAME . '[' . LANGUAGE_NONE . '][1][value]' => $parent_synonym,
    ), 'Save');
    $term_parent = $this->getLastTerm($this->vocabularies['enabled']);

    $this->drupalPost('admin/structure/taxonomy/enabled/add', array(
      'name' => $name,
      'description[value]' => $this->randomName(),
      SYNONYMS_DEFAULT_FIELD_NAME . '[' . LANGUAGE_NONE . '][0][value]' => $synonym,
      'parent[]' => array($term_parent->tid),
    ), 'Save');

    $term = $this->getLastTerm($this->vocabularies['enabled']);

    $this->drupalGet('taxonomy/term/' . $term->tid);
    // Asserting the presence of synonym string.
    $this->assertText($synonym, 'The synonym string is present on taxonomy term view page');

    // Testing the 'synonyms' property of 'taxonomy_term' entity.
    $synonyms = synonyms_get_sanitized($no_synonyms_term);
    $this->assertTrue(empty($synonyms), 'Successfully retrieved synonyms_get_sanitized() for a term without synonyms.');
    $synonyms = synonyms_get_sanitized($one_synonym_term);
    $this->assertTrue(count($synonyms) == 1 && $synonyms[0] == $synonym1, 'Successfully retrieved synonyms_get_sanitized() for a term with a single synonym.');
    $synonyms = synonyms_get_sanitized($two_synonyms_term);
    $this->assertTrue(count($synonyms) == 2 && $synonyms[0] == $synonym1 && $synonyms[1] == $synonym2, 'Successfully retrieved synonyms_get_sanitized() for a term with 2 synonyms.');

    // Testing the function synonyms_get_term_by_synonym().
    $tid = synonyms_get_term_by_synonym(drupal_strtoupper($synonym), $this->vocabularies['enabled'], $term_parent->tid);
    $this->assertEqual($tid, $term->tid, 'Successfully looked up term by its synonym.');
    $tid = synonyms_get_term_by_synonym(drupal_strtoupper($name), $this->vocabularies['enabled'], $term_parent->tid);
    $this->assertEqual($tid, $term->tid, 'Successfully looked up term by its name.');
    // Now submitting a non-existing name.
    $tid = synonyms_get_term_by_synonym($parent_synonym, $this->vocabularies['enabled'], $term_parent->tid);
    $this->assertEqual($tid, 0, 'synonyms_get_term_by_synonym() returns 0 if the term is not found (considering $parent parameter).');

    // Testing the function synonyms_add_term_by_synonym().
    $tid = synonyms_add_term_by_synonym(drupal_strtolower($name), $this->vocabularies['enabled'], $term_parent->tid);
    $this->assertEqual($tid, $term->tid, 'Successfully called synonyms_add_term_by_synonym() on an existing title and no new term was created.');
    $tid = synonyms_add_term_by_synonym(drupal_strtolower($synonym), $this->vocabularies['enabled'], $term_parent->tid);
    $this->assertEqual($tid, $term->tid, 'Successfully called synonyms_add_term_by_synonym() on an existing synonym and no new term was created.');
    drupal_static_reset();
    $tid = synonyms_add_term_by_synonym($parent_synonym, $this->vocabularies['enabled'], $term_parent->tid);
    $new_term = taxonomy_term_load($tid);
    $new_term_parents = array_keys(taxonomy_get_parents($new_term->tid));
    $this->assertEqual($parent_synonym, $new_term->name, 'Successfully called synonyms_add_term_by_synonym() on a new title and a new term was created.');
    $this->assertNotEqual($new_term->tid, $term_parent->tid, 'Successfully called synonyms_add_term_by_synonym() on a synonym of $parent. New term was created instead of returning $parent\'s tid.');
    $this->assertTrue(in_array($term_parent->tid, $new_term_parents), 'Successfully called synonyms_add_term_by_synonym(). New term is assigned as a child to supplied $parent parameter.');

    // Disabling functionality of synonyms for "enabled" vocabulary
    // and making sure it has cleaned up all its functionality.
    $this->drupalPost('admin/structure/taxonomy/enabled/edit', array(
      'synonyms[synonyms][' . SYNONYMS_DEFAULT_FIELD_NAME . ']' => FALSE,
    ), 'Save');

    $this->drupalGet('taxonomy/term/' . $term->tid);
    // Asserting the absence of synonym string.
    $this->assertNoText($synonym, 'The synonym string is no longer present on taxonomy term view page after disabling "synonyms" feature for a vocabulary');
    $term = array_pop(entity_load('taxonomy_term', array($term->tid), array(), TRUE));
    $this->assertFalse(isset($term->{SYNONYMS_DEFAULT_FIELD_NAME}), 'The term no longer has synonyms field after disabling "synonyms" feature for a vocabulary');

    // Testing the 'synonyms' property of 'taxonomy_term' entity.
    $synonyms = synonyms_get_sanitized($no_synonyms_term);
    $this->assertTrue(empty($synonyms), 'Successfully retrieved synonyms_get_sanitized() on a term without synonyms after disabling "synonyms" feature');
    $synonyms = synonyms_get_sanitized($one_synonym_term);
    $this->assertTrue(empty($synonyms), 'Successfully retrieved synonyms_get_sanitized() on a term with a single synonym after disabling "synonyms" feature');
    $synonyms = synonyms_get_sanitized($two_synonyms_term);
    $this->assertTrue(empty($synonyms), 'Successfully retrieved synonyms_get_sanitized() on a term with 2 synonyms after disabling "synonyms" feature');

    $tid = synonyms_get_term_by_synonym(drupal_strtoupper($synonym), $this->vocabularies['enabled']);
    $this->assertEqual($tid, 0, 'synonyms_get_term_by_synonym() returns 0 after disabling "synonyms" feature for a vocabulary');
    $tid = synonyms_get_term_by_synonym(drupal_strtoupper($name), $this->vocabularies['enabled'], $term_parent->tid);
    $this->assertEqual($tid, $term->tid, 'synonyms_get_term_by_synonym() returns $term->tid even after disabling "synonyms" feature if looking up by term title');

    // Testing synonyms_add_term_by_synonym() function.
    $tid = synonyms_add_term_by_synonym(drupal_strtolower($name), $this->vocabularies['enabled'], $term_parent->tid);
    $this->assertEqual($tid, $term->tid, 'Successfully called synonyms_add_term_by_synonym() on an existing title and no new term was created after disabling "synonyms" feature.');
    $tid = synonyms_add_term_by_synonym(drupal_strtolower($synonym), $this->vocabularies['enabled'], $term_parent->tid);
    $new_term = taxonomy_term_load($tid);
    $new_term_parents = array_keys(taxonomy_get_parents($new_term->tid));
    $this->assertFalse(in_array($new_term->tid, array($term->tid, $term_parent->tid)), 'Successfully called synonyms_add_term_by_synonym() using previous synonym and a new term was created (because the vocabulary has disabled "synonyms" feature)');
    $this->assertTrue(in_array($term_parent->tid, $new_term_parents), 'Successfully called synonyms_add_term_by_synonym(). New term is assigned as a child to supplied $parent parameter with disabled "synonyms" feature.');

    $tid = synonyms_add_term_by_synonym($parent_synonym, $this->vocabularies['enabled']);
    $new_term = array_pop(entity_load('taxonomy_term', array($tid), array(), TRUE));
    $this->assertEqual($parent_synonym, $new_term->name, 'Successfully called synonyms_add_term_by_synonym() on an new title and a new term was created.');
    $this->assertFalse(in_array($new_term->tid, array($term->tid, $term_parent->tid)), 'Successfully called synonyms_add_term_by_synonym() on the synonyn of parent term. New term was created (because the vocabulary has disabled "synonyms" feature)');
  }
}

/**
 * Test "Synonyms friendly autocomplete" widget of Synonyms module.
 */
class AutocompleteSynonymsWebTestCase extends SynonymsWebTestCase {

  /**
   * Array of fully loaded vocabulary entities to be used in this test.
   *
   * Array is keyed by the corresponding vocabulary's machine name.
   *
   * @var array
   */
  protected $vocabularies = array(
    'enabled' => TRUE,
    'disabled' => FALSE,
  );

  /**
   * Array of fully loaded taxonomy term entities to be used in this test.
   *
   * Term entities are grouped by machine name of the vocabulary to which they
   * belong.
   *
   * @var array
   */
  protected $terms = array(
    'enabled' => array(),
    'disabled' => array(),
  );

  /**
   * Entity type to which a term reference field with tested widget is attached.
   *
   * @var string
   */
  protected $entity_type = 'node';

  /**
   * Bundle to which a term reference field with tested widget is attached.
   *
   * @var string
   */
  protected $bundle = 'synonyms_test_content';

  /**
   * GetInfo method.
   */
  public function getInfo() {
    return array(
      'name' => 'Taxonomy synonyms autocomplete',
      'description' => 'Ensure that the "synonym friendly autocomplete" widget works correctly with taxonomy terms.',
      'group' => 'Synonyms',
    );
  }

  /**
   * SetUp method.
   */
  public function setUp() {
    parent::setUp();
    // Creating vocabularies.
    $this->drupalLogin($this->admin);
    foreach ($this->vocabularies as $k => $v) {
      $name = $this->randomName();
      $this->drupalPost('admin/structure/taxonomy/add', array(
        'name' => $name,
        'machine_name' => $k,
        'description' => $this->randomName(),
        'synonyms[synonyms][' . SYNONYMS_DEFAULT_FIELD_NAME . ']' => $v,
      ), 'Save');
      $this->vocabularies[$k] = taxonomy_vocabulary_machine_name_load($k);
    }

    // Creating a test content type.
    $this->drupalPost('admin/structure/types/add', array(
      'name' => 'Synonyms Test Content',
      'type' => $this->bundle,
    ), 'Save content type');

    // Attaching each vocabulary term reference field to the new content type.
    foreach ($this->vocabularies as $k => $v) {
      $this->drupalPost('admin/structure/types/manage/synonyms_test_content/fields', array(
        'fields[_add_new_field][label]' => 'Synonym Terms ' . $k,
        'fields[_add_new_field][field_name]' => 'synonyms_term_' . $k,
        'fields[_add_new_field][type]' => 'taxonomy_term_reference',
        'fields[_add_new_field][widget_type]' => 'synonyms_autocomplete',
      ), 'Save');
      $this->drupalPost(NULL, array(
        'field[settings][allowed_values][0][vocabulary]' => $v->machine_name,
      ), 'Save field settings');
      $this->drupalPost(NULL, array(
        'field[cardinality]' => FIELD_CARDINALITY_UNLIMITED,
      ), 'Save settings');
    }
    // Flushing static cache.
    _field_info_collate_fields(TRUE);

    // Now creating taxonomy tree for each vocabulary.
    // For synonym-disabled vocabulary just a few terms is good enough.
    $name = $this->randomName();
    $this->drupalPost('admin/structure/taxonomy/disabled/add', array(
      'name' => $name,
    ), 'Save');
    $this->terms['disabled']['term1'] = $this->getLastTerm($this->vocabularies['disabled']);
    $name .= $this->randomName();
    $this->drupalPost('admin/structure/taxonomy/disabled/add', array(
      'name' => $name,
    ), 'Save');
    $this->terms['disabled']['term1_longer_name'] = $this->getLastTerm($this->vocabularies['disabled']);
    $this->drupalPost('admin/structure/taxonomy/disabled/add', array(
      'name' => $this->randomName(),
    ), 'Save');
    $this->terms['disabled']['term2'] = $this->getLastTerm($this->vocabularies['disabled']);

    // For synonym-enabled vocabulary we have to create such a set of input,
    // that would cover all possible branches of the autocomplete callback.
    $this->drupalPost('admin/structure/taxonomy/enabled/add', array(
      'name' => $this->randomName(),
    ), 'Save');
    $this->terms['enabled']['no_synonyms'] = $this->getLastTerm($this->vocabularies['enabled']);
    $this->drupalPost('admin/structure/taxonomy/enabled/add', array(
      'name' => $this->randomName(),
      SYNONYMS_DEFAULT_FIELD_NAME . '[' . LANGUAGE_NONE . '][0][value]' => $this->randomName(),
    ), 'Save');
    $this->terms['enabled']['one_synonym'] = $this->getLastTerm($this->vocabularies['enabled']);
    $this->drupalPost('admin/structure/taxonomy/enabled/add', array(
      'name' => $this->randomName(),
      SYNONYMS_DEFAULT_FIELD_NAME . '[' . LANGUAGE_NONE . '][0][value]' => $this->randomName(),
    ), 'Add another item');
    $this->drupalPost(NULL, array(
      SYNONYMS_DEFAULT_FIELD_NAME . '[' . LANGUAGE_NONE . '][1][value]' => $this->randomName(),
    ), 'Save');
    $this->terms['enabled']['two_synonyms'] = $this->getLastTerm($this->vocabularies['enabled']);
    $name = $this->randomName();
    $this->drupalPost('admin/structure/taxonomy/enabled/add', array(
      'name' => $name,
      SYNONYMS_DEFAULT_FIELD_NAME . '[' . LANGUAGE_NONE . '][0][value]' => $name . $this->randomName(),
    ), 'Save');
    $this->terms['enabled']['name_similar_synonym'] = $this->getLastTerm($this->vocabularies['enabled']);
    $name = 'similar_synonyms_';
    $this->drupalPost('admin/structure/taxonomy/enabled/add', array(
      'name' => $this->randomName(),
      SYNONYMS_DEFAULT_FIELD_NAME . '[' . LANGUAGE_NONE . '][0][value]' => $name . $this->randomName(),
    ), 'Add another item');
    $this->drupalPost(NULL, array(
      SYNONYMS_DEFAULT_FIELD_NAME . '[' . LANGUAGE_NONE . '][1][value]' => $name . $this->randomName(),
    ), 'Save');
    $this->terms['enabled']['similar_synonyms'] = $this->getLastTerm($this->vocabularies['enabled']);
    $name = 'one_term_name_another_synonym_';
    $this->drupalPost('admin/structure/taxonomy/enabled/add', array(
      'name' => $name . $this->randomName(),
    ), 'Save');
    $this->terms['enabled']['name_another_synonym'] = $this->getLastTerm($this->vocabularies['enabled']);
    $this->drupalPost('admin/structure/taxonomy/enabled/add', array(
      'name' => $this->randomName(),
      SYNONYMS_DEFAULT_FIELD_NAME . '[' . LANGUAGE_NONE . '][0][value]' => $name . $this->randomName(),
    ), 'Save');
    $this->terms['enabled']['synonym_another_name'] = $this->getLastTerm($this->vocabularies['enabled']);
  }

  /**
   * Test auto-creation functionality.
   *
   * Test the auto-creation functionality of the synonym friendly autocomplete
   * widget type. Along the way it tests whether synonyms, submitted into the
   * widget's textfield are converted into the terms, synonyms of which they
   * are.
   */
  public function testAutoCreation() {
    // Trying enabled auto creation.
    $this->drupalPost('admin/structure/types/manage/synonyms-test-content/fields/field_synonyms_term_enabled', array(
      'instance[widget][settings][auto_creation]' => TRUE,
    ), 'Save settings');

    $new_term_name = $this->randomName();
    $this->drupalPost('node/add/synonyms-test-content', array(
      'title' => $this->randomName(),
      'field_synonyms_term_enabled[' . LANGUAGE_NONE . ']' => $this->terms['enabled']['no_synonyms']->name . ', ' . $new_term_name . ', ' . $this->terms['enabled']['one_synonym']->{SYNONYMS_DEFAULT_FIELD_NAME}[LANGUAGE_NONE][0]['value'],
    ), 'Save');
    $this->assertText($this->terms['enabled']['no_synonyms']->name, 'Existing term was assigned to the new node');
    $this->assertText($new_term_name, 'Auto created term was assigned to the new node when Auto creation is on.');
    $this->assertText($this->terms['enabled']['one_synonym']->name, 'Submitting a synonym into autocomplete widget results in the term, to which the synonym belongs, being assigned to the just created entity (when Auto creation is on).');
    $term = $this->getLastTerm($this->vocabularies['enabled']);
    $this->assertEqual($term->name, $new_term_name, 'The auto created term has been created when Auto creation is on.');

    // Trying disabled auto creation.
    $this->drupalPost('admin/structure/types/manage/synonyms-test-content/fields/field_synonyms_term_enabled', array(
      'instance[widget][settings][auto_creation]' => FALSE,
    ), 'Save settings');

    $new_term_name = $this->randomName();
    $this->drupalPost('node/add/synonyms-test-content', array(
      'title' => $this->randomName(),
      'field_synonyms_term_enabled[' . LANGUAGE_NONE . ']' => $this->terms['enabled']['no_synonyms']->name . ', ' . $new_term_name . ', ' . $this->terms['enabled']['one_synonym']->{SYNONYMS_DEFAULT_FIELD_NAME}[LANGUAGE_NONE][0]['value'],
    ), 'Save');
    $this->assertText($this->terms['enabled']['no_synonyms']->name, 'Existing term was assigned to the new node');
    $this->assertNoText($new_term_name, 'Auto created term was not assigned to the new node when Auto creation is off.');
    $this->assertText($this->terms['enabled']['one_synonym']->name, 'Submitting a synonym into autocomplete widget results in the term, to which the synonym belongs, being assigned to the just created entity (when Auto creation is off).');
    $term = $this->getLastTerm($this->vocabularies['enabled']);
    $this->assertNotEqual($term->name, $new_term_name, 'The auto created term has not been created when Auto creation is off.');
  }

  /**
   * Test autocomplete menu path.
   *
   * Feed all known "buggy" input to synonym friendly autocomplete menu path,
   * in order to test its performance.
   */
  public function testAutocompleteMenuPath() {
    $assertions = array();
    // Testing empty and non-existing name arguments.
    foreach ($this->vocabularies as $v) {
      $assertions[] = array(
        'vocabulary' => $v->machine_name,
        'input' => '',
        'response' => array(),
        'message' => 'Submitting empty string into a ' . $v->machine_name . ' synonyms vocabulary',
      );
      $assertions[] = array(
        'vocabulary' => $v->machine_name,
        'input' => $this->randomName(),
        'response' => array(),
        'message' => 'Submitting non existing name into a ' . $v->machine_name . ' synonyms vocabulary',
      );
    }

    // Testing the synonym-disabled vocabulary.
    $terms = $this->terms['disabled'];
    $assertions[] = array(
      'vocabulary' => 'disabled',
      'input' => drupal_strtoupper(drupal_substr($terms['term1']->name, 1, -1)),
      'response' => array($terms['term1']->name => $terms['term1']->name, $terms['term1_longer_name']->name => $terms['term1_longer_name']->name),
      'message' => 'Submitting a name similar to 2 existing term names into a disabled synonyms vocabulary',
    );
    $assertions[] = array(
      'vocabulary' => 'disabled',
      'input' => $terms['term1']->name . ',' . drupal_strtoupper(drupal_substr($terms['term1']->name, 1, -1)),
      'response' => array($terms['term1']->name . ', ' . $terms['term1_longer_name']->name => $terms['term1_longer_name']->name),
      'message' => 'Submitting one term already chosen along with a name similar to 2 existing term names into a disabled synonyms vocabulary',
    );
    $assertions[] = array(
      'vocabulary' => 'disabled',
      'input' => drupal_strtoupper(drupal_substr($terms['term2']->name, 1, -1)),
      'response' => array($terms['term2']->name => $terms['term2']->name),
      'message' => 'Submitting a name similar to one existing term name into a disabled synonyms vocabulary',
    );
    $assertions[] = array(
      'vocabulary' => 'disabled',
      'input' => drupal_strtolower($terms['term2']->name) . ',' . drupal_strtoupper(drupal_substr($terms['term2']->name, 1, -1)),
      'response' => array(),
      'message' => 'Submitting the same term over again into a disabled synonyms vocabulary',
    );

    // Testing the synonym-enabled vocabulary.
    $terms = $this->terms['enabled'];
    $assertions[] = array(
      'vocabulary' => 'enabled',
      'input' => drupal_strtoupper($terms['no_synonyms']->name) . ',' . drupal_strtolower(drupal_substr($terms['no_synonyms']->name, 1, -1)),
      'response' => array(),
      'message' => 'Submitting the same term over again into an enabled synonyms vocabulary',
    );
    $assertions[] = array(
      'vocabulary' => 'enabled',
      'input' => $terms['one_synonym']->name . ',' . $terms['one_synonym']->{SYNONYMS_DEFAULT_FIELD_NAME}[LANGUAGE_NONE][0]['safe_value'],
      'response' => array(),
      'message' => 'Submitting a synonym of a term over again into an enabled synonyms vocabulary',
    );
    foreach (array('no_synonyms', 'one_synonym', 'two_synonyms') as $k) {
      $assertions[] = array(
        'vocabulary' => 'enabled',
        'input' => drupal_strtolower(drupal_substr($terms[$k]->name, 1, -1)),
        'response' => array($terms[$k]->name => $terms[$k]->name),
        'message' => 'Submitting a name similar to ' . $k . ' term into an enabled synonyms vocabulary',
      );

      $synonyms = field_get_items('taxonomy_term', $terms[$k], SYNONYMS_DEFAULT_FIELD_NAME);
      if (is_array($synonyms)) {
        foreach ($synonyms as $delta => $item) {
          $assertions[] = array(
            'vocabulary' => 'enabled',
            'input' => drupal_strtolower(drupal_substr($item['safe_value'], 1, -1)),
            'response' => array($terms[$k]->name => $this->synonymAutocompleteResult($terms[$k], $item['safe_value'])),
            'message' => 'Submitting a name similar to synonym#' . $delta . ' of the term ' . $k . ' into an enabled synonyms vocabulary',
          );
        }
      }
    }
    $assertions[] = array(
      'vocabulary' => 'enabled',
      'input' => 'one_term_name_another_synonym_',
      'response' => array(
        $terms['name_another_synonym']->name => $terms['name_another_synonym']->name,
        $terms['synonym_another_name']->name => $this->synonymAutocompleteResult($terms['synonym_another_name'], $terms['synonym_another_name']->{SYNONYMS_DEFAULT_FIELD_NAME}[LANGUAGE_NONE][0]['safe_value']),
      ),
      'message' => 'Submitting a keyword similar to name of one term and synonym of another into an enabled synonyms vocabulary yields both included in the results',
    );

    foreach ($assertions as $v) {
      $this->assertAutocompleteMenuPath($v);
    }
  }

  /**
   * Test 'Suggestions Size' setting of synonyms-friendly autocomplete widget.
   */
  function testWidgetSettingsSuggestionSize() {
    $suggestion_size = 1;
    $this->drupalPost('admin/structure/types/manage/synonyms-test-content/fields/field_synonyms_term_disabled', array(
      'instance[widget][settings][suggestion_size]' => $suggestion_size,
    ), 'Save settings');
    $this->drupalPost('admin/structure/types/manage/synonyms-test-content/fields/field_synonyms_term_enabled', array(
      'instance[widget][settings][suggestion_size]' => $suggestion_size,
    ), 'Save settings');

    $assertions = array();

    // If size was bigger than 1, we'd get suggested 2 terms: 'term1' and
    // 'term1_longer_name'.
    $assertions[] = array(
      'vocabulary' => 'disabled',
      'input' => $this->terms['disabled']['term1']->name,
      'response' => array($this->terms['disabled']['term1']->name => $this->terms['disabled']['term1']->name),
      'message' => 'Suggestions Size option is respected in autocomplete widget for term suggestion entries.',
    );

    $assertions[] = array(
      'vocabulary' => 'enabled',
      'input' => $this->terms['enabled']['name_similar_synonym']->name,
      'response' => array($this->terms['enabled']['name_similar_synonym']->name => $this->terms['enabled']['name_similar_synonym']->name),
      'message' => 'Suggestions Size option is respected in autocomplete widget for term and synonym suggestion entries.'
    );

    $assertions[] = array(
      'vocabulary' => 'enabled',
      'input' => drupal_substr($this->terms['enabled']['similar_synonyms']->{SYNONYMS_DEFAULT_FIELD_NAME}[LANGUAGE_NONE][0]['value'], 0, 8),
      'response' => array($this->terms['enabled']['similar_synonyms']->name => $this->synonymAutocompleteResult($this->terms['enabled']['similar_synonyms'], $this->terms['enabled']['similar_synonyms']->{SYNONYMS_DEFAULT_FIELD_NAME}[LANGUAGE_NONE][0]['value'])),
      'message' => 'Suggestions Size option is respected in autocomplete widget for synonyms suggestion entries.'
    );

    foreach ($assertions as $assertion) {
      $this->assertAutocompleteMenuPath($assertion);
    }
  }

  /**
   * Test 'Suggest only one entry per term' setting of autocomplete widget.
   */
  function testWidgetSettingsSuggestOnlyUnique() {
    $assertions = array();

    // Testing disabled "Suggest only one entry per term" setting.
    $assertions[] = array(
      'vocabulary' => 'enabled',
      'input' => $this->terms['enabled']['name_similar_synonym']->name,
      'response' => array(
        $this->terms['enabled']['name_similar_synonym']->name => $this->terms['enabled']['name_similar_synonym']->name,
        $this->terms['enabled']['name_similar_synonym']->name . ' ' => $this->synonymAutocompleteResult($this->terms['enabled']['name_similar_synonym'], $this->terms['enabled']['name_similar_synonym']->{SYNONYMS_DEFAULT_FIELD_NAME}[LANGUAGE_NONE][0]['value']),
      ),
      'message' => 'Both term and its synonym are shown when "Suggest only one entry per term" is off.'
    );

    $assertions[] = array(
      'vocabulary' => 'enabled',
      'input' => drupal_substr($this->terms['enabled']['similar_synonyms']->{SYNONYMS_DEFAULT_FIELD_NAME}[LANGUAGE_NONE][0]['value'], 0, 8),
      'response' => array(
        $this->terms['enabled']['similar_synonyms']->name => $this->synonymAutocompleteResult($this->terms['enabled']['similar_synonyms'], $this->terms['enabled']['similar_synonyms']->{SYNONYMS_DEFAULT_FIELD_NAME}[LANGUAGE_NONE][0]['value']),
        $this->terms['enabled']['similar_synonyms']->name . ' ' => $this->synonymAutocompleteResult($this->terms['enabled']['similar_synonyms'], $this->terms['enabled']['similar_synonyms']->{SYNONYMS_DEFAULT_FIELD_NAME}[LANGUAGE_NONE][1]['value']),
      ),
      'message' => 'Multiple synonyms are shown when "Suggest only one entry per term" is off.'
    );

    foreach ($assertions as $assertion) {
      $this->assertAutocompleteMenuPath($assertion);
    }

    // Testing enabled "Suggest only one entry per term" setting.
    $this->drupalPost('admin/structure/types/manage/synonyms-test-content/fields/field_synonyms_term_disabled', array(
      'instance[widget][settings][suggest_only_unique]' => TRUE,
    ), 'Save settings');
    $this->drupalPost('admin/structure/types/manage/synonyms-test-content/fields/field_synonyms_term_enabled', array(
      'instance[widget][settings][suggest_only_unique]' => TRUE,
    ), 'Save settings');

    $assertions = array();

    $assertions[] = array(
      'vocabulary' => 'enabled',
      'input' => $this->terms['enabled']['name_similar_synonym']->name,
      'response' => array(
        $this->terms['enabled']['name_similar_synonym']->name => $this->terms['enabled']['name_similar_synonym']->name,
      ),
      'message' => 'Only term is shown and synonym is not shown when "Suggest only one entry per term" is on.'
    );

    $assertions[] = array(
      'vocabulary' => 'enabled',
      'input' => drupal_substr($this->terms['enabled']['similar_synonyms']->{SYNONYMS_DEFAULT_FIELD_NAME}[LANGUAGE_NONE][0]['value'], 0, 8),
      'response' => array(
        $this->terms['enabled']['similar_synonyms']->name => $this->synonymAutocompleteResult($this->terms['enabled']['similar_synonyms'], $this->terms['enabled']['similar_synonyms']->{SYNONYMS_DEFAULT_FIELD_NAME}[LANGUAGE_NONE][0]['value']),
      ),
      'message' => 'Only single synonym is shown when "Suggest only one entry per term" is on.'
    );

    foreach ($assertions as $assertion) {
      $this->assertAutocompleteMenuPath($assertion);
    }
  }

  /**
   * Assert output of synonym friendly autocomplete path.
   *
   * @param array $assertion
   *   Specially encoded array of assertion. Should include the following keys:
   *     vocabulary - machine name of vocabulary whose field is asserted
   *     input - input string to be fed to autocomplete menu path
   *     response - JSON decoded expected response of autocomplete menu path
   *     message - Drupal assertion message to be displayed on test results
   *                 page
   */
  protected function assertAutocompleteMenuPath($assertion) {
    $response = $this->drupalGet('synonyms/autocomplete/field_synonyms_term_' . $assertion['vocabulary'] . '/' . $this->entity_type . '/' . $this->bundle . '/' . $assertion['input']);
    if (!$response) {
      $this->fail($assertion['message'], 'Autocomplete Menu Path');
      return;
    }
    $response = (array) json_decode($response);
    $is_the_same = count($response) == count($assertion['response']);
    $is_the_same = $is_the_same && count(array_intersect_assoc($response, $assertion['response'])) == count($assertion['response']);

    $this->assertTrue($is_the_same, $assertion['message'], 'Autocomplete Menu Path');
  }

  /**
   * Return expected autocomplete menu path result.
   *
   * The result is prepared as if the term was found by the supplied synonym.
   *
   * @param object $term
   *   Fully loaded taxonomy term object for which the result is generated.
   * @param string $synonym
   *   Synonym by which the term was hit in the search
   *
   * @return string
   *   Formatted autocomplete result
   */
  protected function synonymAutocompleteResult($term, $synonym) {
    return t('@synonym, synonym of %term', array('@synonym' => $synonym, '%term' => $term->name));
  }
}

/**
 * Test Synonyms module integration with Drupal search functionality.
 */
class SearchIndexSynonymsWebTestCase extends SynonymsWebTestCase {
  protected $vocabularies = array(
    'enabled' => TRUE,
  );

  /**
   * GetInfo method.
   */
  public function getInfo() {
    return array(
      'name' => 'Synonyms search integration',
      'description' => 'Ensure that Synonyms module correctly integrates with the Drupal search functionality.',
      'group' => 'Synonyms',
    );
  }

  /**
   * SetUp method.
   */
  public function setUp() {
    parent::setUp();
    // Creating vocabularies.
    $this->drupalLogin($this->admin);
    foreach ($this->vocabularies as $k => $v) {
      $name = $this->randomName();
      $this->drupalPost('admin/structure/taxonomy/add', array(
        'name' => $name,
        'machine_name' => $k,
        'description' => $this->randomName(),
        'synonyms[synonyms][' . SYNONYMS_DEFAULT_FIELD_NAME . ']' => $v,
      ), 'Save');
      $this->vocabularies[$k] = taxonomy_vocabulary_machine_name_load($k);
    }

    // Creating a test content type.
    $this->drupalPost('admin/structure/types/add', array(
      'name' => 'Synonyms Test Content',
      'type' => 'synonyms_test_content',
    ), 'Save content type');

    // Attaching each vocabulary term reference field to the new content type.
    foreach ($this->vocabularies as $k => $v) {
      $this->drupalPost('admin/structure/types/manage/synonyms_test_content/fields', array(
        'fields[_add_new_field][label]' => 'Synonym Terms ' . $k,
        'fields[_add_new_field][field_name]' => 'synonyms_term_' . $k,
        'fields[_add_new_field][type]' => 'taxonomy_term_reference',
        'fields[_add_new_field][widget_type]' => 'synonyms_autocomplete',
      ), 'Save');
      $this->drupalPost(NULL, array(
        'field[settings][allowed_values][0][vocabulary]' => $v->machine_name,
      ), 'Save field settings');
      $this->drupalPost(NULL, array(
        'field[cardinality]' => FIELD_CARDINALITY_UNLIMITED,
      ), 'Save settings');
    }
    // Flushing static cache.
    _field_info_collate_fields(TRUE);
  }

  /**
   * Test searching by a term synonym.
   *
   * Since logically term and its synonyms represent the same entity, the idea
   * is that searching by a term synonym should trigger all content referencing
   * that term to be included in search results. Additionally we test that when
   * a synonym is deleted/edited in a term, corresponding content is no longer
   * encountered when searched by ex-synonym.
   */
  public function testSearchTermSynonym() {
    // Create a few terms and synonyms.
    $terms = array();
    $term = (object) array(
      'vid' => $this->vocabularies['enabled']->vid,
      'name' => $this->randomName(),
    );
    taxonomy_term_save($term);
    $terms['no_synonyms'] = $this->getLastTerm($this->vocabularies['enabled']);

    $term = (object) array(
      'vid' => $this->vocabularies['enabled']->vid,
      'name' => $this->randomName(),
      SYNONYMS_DEFAULT_FIELD_NAME => array(
        LANGUAGE_NONE => array(
          array('value' => $this->randomName()),
        ),
      )
    );
    taxonomy_term_save($term);
    $terms['one_synonym'] = $this->getLastTerm($this->vocabularies['enabled']);

    $term = (object) array(
      'vid' => $this->vocabularies['enabled']->vid,
      'name' => $this->randomName(),
      SYNONYMS_DEFAULT_FIELD_NAME => array(
        LANGUAGE_NONE => array(
          array('value' => $this->randomName()),
          array('value' => $this->randomName()),
        ),
      )
    );
    taxonomy_term_save($term);
    $terms['two_synonyms'] = $this->getLastTerm($this->vocabularies['enabled']);

    // Creating a node, which references to all the terms we have.
    $title = $this->randomName();
    $this->drupalPost('node/add/synonyms-test-content', array(
      'title' => $title,
      'field_synonyms_term_enabled[' . LANGUAGE_NONE . ']' => $terms['no_synonyms']->name . ', ' . $terms['one_synonym']->name . ', ' . $terms['two_synonyms']->name,
    ), 'Save');
    $node = $this->drupalGetNodeByTitle($title);

    // Rebuilding Search index.
    $this->cronRun();

    foreach ($terms as $k => $term) {
      $this->assertSearchResults($term->name, array($node), 'Searching by name of the term ' . $k);
      foreach (synonyms_get_sanitized($term) as $delta => $synonym) {
        $this->assertSearchResults($synonym, array($node), 'Searching by synonym #' . $delta . ' of the term ' . $k);
      }
    }

    // Removing a synonym from the term. Then asserting node got re-indexed
    // with new values of synonyms.
    $deleted_synonym = array_pop($terms['one_synonym']->{SYNONYMS_DEFAULT_FIELD_NAME}[LANGUAGE_NONE]);
    taxonomy_term_save($terms['one_synonym']);
    $this->cronRun();
    $this->assertSearchResults($deleted_synonym['value'], array(), 'Searching by recently deleted synonym of a taxonomy term yields no results.');

    // Editing a synonym in a term. Then asserting node got re-indexed with new
    // values of synonyms.
    $ex_synonym = $terms['two_synonyms']->{SYNONYMS_DEFAULT_FIELD_NAME}[LANGUAGE_NONE][0]['value'];
    $terms['two_synonyms']->{SYNONYMS_DEFAULT_FIELD_NAME}[LANGUAGE_NONE][0]['value'] = $this->randomName();
    taxonomy_term_save($terms['two_synonyms']);
    $this->cronRun();
    $this->assertSearchResults($ex_synonym, array(), 'Searching by recently changed synonym of a taxonomy term yields no results.');

    // We disable entire field from being source of synonyms and make sure for
    // all synonyms search results are empty.
    $this->drupalPost('admin/structure/taxonomy/enabled/edit', array(
      'synonyms[synonyms][' . SYNONYMS_DEFAULT_FIELD_NAME . ']' => FALSE,
    ), 'Save');
    $this->cronRun();
    foreach ($terms as $k => $term) {
      $items = field_get_items('taxonomy_term', $term, SYNONYMS_DEFAULT_FIELD_NAME);
      if (is_array($items)) {
        foreach ($items as $synonym) {
          $this->assertSearchResults($synonym['value'], array(), 'Searching by ' . $k . ' term synonym, which field was recently disabled as source of synonyms in vocabulary yields no results.');
        }
      }
    }
  }

  /**
   * Assert search results.
   *
   * @param $keyword string
   *   Keyword to supply to the search mechanism
   * @param $results array
   *   Array of fully loaded nodes that are expected to be on search results
   * @param $message string
   *   Drupal assertion message to display on test results page
   */
  protected function assertSearchResults($keyword, $results, $message) {
    $response = $this->drupalGet('search/node/' . $keyword);
    $matches = array();
    preg_match_all('#\<li[^>]+class="search-result"[^>]*\>(.*?)\</li\>#si', $response, $matches);
    $matches = $matches[1];
    if (count($matches) != count($results)) {
      $this->fail($message);
      return;
    }
    $matches = implode('', $matches);
    foreach ($results as $node) {
      if (strpos($matches, 'node/' . $node->nid) === FALSE) {
        $this->fail($message);
        return;
      }
    }
    $this->pass($message);
  }
}

/**
 * Base class for all test cases that test Synonyms Extractor classes.
 */
abstract class AbstractSynonymsExtractorWebTestCase extends DrupalWebTestCase {

  /**
   * Taxonomy vocabulary object on whose term all synonyms extracting tests will
   * occur.
   *
   * @var object
   */
  protected $vocabulary;

  /**
   * Class name of a synonyms extractor that is being tested.
   *
   * @var string
   */
  protected $extractor;

  /**
   * Field API field definition array of the field that is tested right now.
   *
   * @var array
   */
  protected $field;

  /**
   * Field API instance definition array of the instance that is tested now.
   *
   * @var array
   */
  protected $instance;

  /**
   * SetUp method.
   *
   * @param string $class
   *   Name of class that is being tested
   * @param array $modules
   *   Array of extra modules to install for testing a particular synonyms
   *   extractor
   */
  public function setUp($class, $modules = array()) {
    array_unshift($modules, 'synonyms');
    parent::setUp($modules);

    $this->vocabulary = (object) array(
      'name' => 'Test Synonyms Extractor',
      'machine_name' => 'synonyms_extractor',
    );
    taxonomy_vocabulary_save($this->vocabulary);

    $this->extractor = $class;
  }

  /**
   * Completely set field in the tested vocabulary.
   *
   * Create a field in Field API (if does not exist yet), then create an
   * instance and relate it to our tested vocabulary. Lastly enable this field
   * as a source of synonyms for our tested vocabulary.
   *
   * @param array $field
   *   Field definition array as expected by Field API
   * @param array $instance
   *   Instance definition array as expected by Field API
   */
  protected function addFieldInstance($field, $instance) {
    $field = field_create_field($field);
    $instance['entity_type'] = 'taxonomy_term';
    $instance['bundle'] = field_extract_bundle('taxonomy_term', $this->vocabulary);
    field_create_instance($instance);
    $settings = synonyms_vocabulary_settings($this->vocabulary);
    $settings['synonyms'][] = $field['field_name'];
    synonyms_vocabulary_settings_save($this->vocabulary, $settings);
    $this->field = $field;
    $this->instance = $instance;
  }

  /**
   * Test synonymsExtract() method of class.
   *
   * @param array $items
   *   Array of field items to be saved in tested term
   * @param array $etalon
   *   Expected return of synonymsExtract() method of class
   * @param string $message
   *   Any custom message to be added to the standard one and passed to
   *   SimpleTest assertion method
   */
  protected function assertSynonymsExtract($items, $etalon, $message = '') {
    $term = (object) array(
      'name' => $this->randomName(),
      'vid' => $this->vocabulary->vid,
    );
    $term->{$this->field['field_name']} = $items;
    taxonomy_term_save($term);
    $items = field_get_items('taxonomy_term', $term, $this->field['field_name']);

    $synonyms = is_array($items) ? call_user_func(array($this->extractor, 'synonymsExtract'), $items, $this->field, $this->instance, $term, 'taxonomy_term') : array();
    $this->assertTrue(count(array_intersect($etalon, $synonyms)) == count($etalon), 'Synonyms Extractor ' . $this->extractor . ' passed synonymsExtract() method: ' . $message);
    // Cleaning up.
    taxonomy_term_delete($term->tid);
  }

  /**
   * Test processEntityFieldQuery method of class.
   *
   * @param array $meta_data
   *   Array of meta data. Each subarray represents a single term and whether it
   *   is expected to be included in the results of EntityFieldQuery. Should
   *   have the following structure:
   *     items - array of field items. Terms will be automatically created with
   *       those items
   *     expected - bool, whether the created term should be expected in the
   *       results of EntityFieldQuery
   * @param string $tag
   *   Corresponding parameter to be passed to processEntityFieldQuery() method
   * @param string $message
   *   Any custom message to be added to the standard one and passed to
   *   SimpleTest assertion method
   */
  protected function assertProcessEntityFieldQuery($meta_data, $tag, $message = '') {
    // Creating taxonomy terms according to the meta data.
    $terms = array();
    foreach ($meta_data as $v) {
      $term = (object) array(
        'name' => $this->randomName(),
        'vid' => $this->vocabulary->vid,
      );
      taxonomy_term_save($term);
      $term->{$this->field['field_name']} = $v['items'];
      taxonomy_term_save($term);
      $term->expected = $v['expected'];
      $terms[] = $term;
    }
    // Preparing and running EntityFieldQuery.
    $efq = new EntityFieldQuery();
    $efq->entityCondition('entity_type', 'taxonomy_term')
        ->entityCondition('bundle', $this->vocabulary->machine_name);
    call_user_func(array($this->extractor, 'processEntityFieldQuery'), $tag, $efq, $this->field, $this->instance);
    $result = $efq->execute();
    $result = isset($result['taxonomy_term']) ? array_keys($result['taxonomy_term']) : array();
    // Asserting results of EntityFieldQuery.
    $pass = TRUE;
    foreach ($terms as $term) {
      $tmp = $term->expected ? in_array($term->tid, $result) : !in_array($term->tid, $result);
      $pass = $pass && $tmp;
    }
    $this->assertTrue($pass, 'Synonyms Extractor ' . $this->extractor . ' passed processEntityFieldQuery() method: ' . $message);
    // Cleaning up.
    foreach ($terms as $term) {
      taxonomy_term_delete($term->tid);
    }
  }

  /**
   * Test mergeEntityAsSynonym method of class.
   *
   * @param array $items
   *   Parameter will be passed directly to the extractor class method
   * @param object $synonym_entity
   *   Parameter will be passed directly to the extractor class method
   * @param string $synonym_entity_type
   *   Parameter will be passed directly to the extractor class method
   * @param array $etalon
   *   Array that is expected to be returned by the tested method
   * @param string $message
   *   Any custom message to be added to the standard one and passed to
   *   SimpleTest assertion method
   */
  protected function assertMergeEntityAsSynonym($items, $synonym_entity, $synonym_entity_type, $etalon, $message = '') {
    $extra_items = call_user_func(array($this->extractor, 'mergeEntityAsSynonym'), $items, $this->field, $this->instance, $synonym_entity, $synonym_entity_type);
    foreach ($etalon as $k => $v) {
      if (count(array_intersect($etalon[$k], $extra_items[$k])) != count($etalon[$k])) {
        $this->fail('Synonyms Extractor ' . $this->extractor . ' passed mergeEntityAsSynonym() method: ' . $message);
        return;
      }
    }
    $this->pass('Synonyms Extractor ' . $this->extractor . ' passed mergeEntityAsSynonym() method: ' . $message);
  }
}

/**
 * Test SynonymsSynonymsExtractor class.
 */
class SynonymsSynonymsExtractorWebTestCase extends AbstractSynonymsExtractorWebTestCase {

  /**
   * GetInfo method.
   */
  public function getInfo() {
    return array(
      'name' => 'SynonymsSynonymsExtractor',
      'description' => 'Ensure that the synonyms module extracts synonyms from text and number fields correctly.',
      'group' => 'Synonyms',
    );
  }

  /**
   * SetUp method.
   */
  public function setUp() {
    parent::setUp('SynonymsSynonymsExtractor');
  }

  /**
   * Test synonyms extraction for 'text' field type.
   */
  public function testText() {
    $this->addFieldInstance(array(
      'field_name' => 'text',
      'cardinality' => FIELD_CARDINALITY_UNLIMITED,
      'type' => 'text',
    ), array(
      'field_name' => 'text',
      'entity_type' => 'taxonomy_term',
      'bundle' => $this->vocabulary->machine_name,
      'label' => $this->randomName(),
    ));

    // Testing synonymsExtract().
    $this->assertSynonymsExtract(array(), array(), 'on empty field.');

    $synonym = $this->randomName();
    $this->assertSynonymsExtract(array(
      LANGUAGE_NONE => array(
        0 => array('value' => $synonym),
      ),
    ), array($synonym), 'on a field that holds one value.');

    // Testing processEntityFieldQuery().
    $this->assertProcessEntityFieldQuery(array(), $this->randomName(), 'on empty field.');

    $tag = $this->randomName();
    $meta_data = array();
    $meta_data[] = array(
      'items' => array(
        LANGUAGE_NONE => array(
          0 => array('value' => $tag . $this->randomName()),
          1 => array('value' => $this->randomName()),
        ),
      ),
      'expected' => TRUE,
    );
    $meta_data[] = array(
      'items' => array(
        LANGUAGE_NONE => array(
          0 => array('value' => $this->randomName()),
        ),
      ),
      'expected' => FALSE,
    );
    $meta_data[] = array(
      'items' => array(),
      'expected' => FALSE,
    );
    $this->assertProcessEntityFieldQuery($meta_data, $tag, 'on a field with values.');

    // Testing mergeEntityAsSynonym() method.
    $node = (object) array(
      'title' => $this->randomName(),
      'type' => 'page',
    );
    node_save($node);
    $this->assertMergeEntityAsSynonym(array(), $node, 'node', array(array('value' => $node->title)), 'on a node entity.');
  }

}

/**
 * Test TaxonomySynonymsExtractor class.
 */
class TaxonomySynonymsExtractorWebTestCase extends AbstractSynonymsExtractorWebTestCase {

  /**
   * Taxonomy vocabulary object terms.
   *
   * Terms of this vocabulary are synonyms of the main vocabulary terms.
   *
   * @var object
   */
  protected $vocabularySource;

  /**
   * GetInfo method.
   */
  public function getInfo() {
    return array(
      'name' => 'TaxonomySynonymsExtractor',
      'description' => 'Ensure that the synonyms module extracts synonyms from taxonomy term reference fields correctly.',
      'group' => 'Synonyms',
    );
  }

  /**
   * SetUp method.
   */
  public function setUp() {
    parent::setUp('TaxonomySynonymsExtractor');
    $this->vocabularySource = (object) array(
      'name' => $this->randomName(),
      'machine_name' => 'source_vocabulary',
    );
    taxonomy_vocabulary_save($this->vocabularySource);
  }

  /**
   * Test synonyms extraction for 'taxonomy_term_reference' field type.
   */
  public function testTaxonomyTermReference() {
    $this->addFieldInstance(array(
      'field_name' => 'term',
      'cardinality' => FIELD_CARDINALITY_UNLIMITED,
      'type' => 'taxonomy_term_reference',
      'settings' => array(
        'allowed_values' => array(
          array(
            'vocabulary' => $this->vocabularySource->machine_name,
            'parent' => 0,
          ),
        ),
      ),
    ), array(
      'field_name' => 'term',
      'entity_type' => 'taxonomy_term',
      'bundle' => $this->vocabulary->machine_name,
      'label' => $this->randomName(),
    ));

    // Testing synonymsExtract().
    $this->assertSynonymsExtract(array(), array(), 'on empty field.');

    $synonym_term = $this->createSynonymTerm();
    $this->assertSynonymsExtract(array(
      LANGUAGE_NONE => array(
        0 => array(
          'tid' => $synonym_term->tid,
        ),
      ),
    ), array($synonym_term->name), 'on a field that holds one value.');

    // Testing processEntityFieldQuery().
    $this->assertProcessEntityFieldQuery(array(), $this->randomName(), 'on empty field.');

    $tag = $this->randomName();
    $meta_data = array();
    $meta_data[] = array(
      'items' => array(
        LANGUAGE_NONE => array(
          array('tid' => $this->createSynonymTerm($tag . $this->randomName())->tid),
          array('tid' => $this->createSynonymTerm()->tid),
        ),
      ),
      'expected' => TRUE,
    );
    $meta_data[] = array(
      'items' => array(
        LANGUAGE_NONE => array(
          array('tid' => $this->createSynonymTerm()->tid),
        ),
      ),
      'expected' => FALSE,
    );
    $meta_data[] = array(
      'items' => array(),
      'expected' => FALSE,
    );
    $this->assertProcessEntityFieldQuery($meta_data, $tag, 'on a field with values.');

    // Testing mergeEntityAsSynonym() method.
    $synonym_term = $this->createSynonymTerm();
    $this->assertMergeEntityAsSynonym(array(), $synonym_term, 'taxonomy_term', array(array('tid' => $synonym_term->tid)), 'on a term from referenced vocabulary.');
  }

  /**
   * Supportive function.
   *
   * Create a taxonomy term in the synonyms source vocabulary with the specified
   * name.
   *
   * @param string $name
   *   Name of the term to be created. If nothing is supplied a random string
   *   is used
   *
   * @return object
   *   Fully loaded taxonomy term object of the just created term
   */
  protected function createSynonymTerm($name = NULL) {
    if (is_null($name)) {
      $name = $this->randomName();
    }
    $synonym_term = (object) array(
      'name' => $name,
      'vid' => $this->vocabularySource->vid,
    );
    taxonomy_term_save($synonym_term);
    return $synonym_term;
  }
}

/**
 * Test EntityReferenceSynonymsExtractor class.
 */
class EntityReferenceSynonymsExtractorWebTestCase extends AbstractSynonymsExtractorWebTestCase {

  /**
   * GetInfo method.
   */
  public function getInfo() {
    return array(
      'name' => 'EntityReferenceSynonymsExtractor',
      'description' => 'Ensure that the synonyms module extracts synonyms from entity reference fields correctly.',
      'group' => 'Synonyms',
    );
  }

  /**
   * SetUp method.
   */
  public function setUp() {
    parent::setUp('EntityReferenceSynonymsExtractor', array('entityreference'));
  }

  /**
   * Test synonyms extraction for 'entityreference' field type.
   */
  public function testEntityReference() {
    $this->addFieldInstance(array(
      'field_name' => 'reference',
      'cardinality' => FIELD_CARDINALITY_UNLIMITED,
      'type' => 'entityreference',
      // For the sake of experiment we use entityreference field that references
      // nodes of a Drupal standard type to make things easier.
      'settings' => array(
        'target_type' => 'node',
        'handler' => 'base',
        'handler_settings' => array(
          'target_bundles' => array('page' => 'page'),
          'sort' => array('type' => 'none'),
        ),
      ),
    ), array(
      'field_name' => 'reference',
      'entity_type' => 'taxonomy_term',
      'bundle' => $this->vocabulary->machine_name,
      'label' => $this->randomName(),
    ));

    // Testing synonymsExtract().
    $this->assertSynonymsExtract(array(), array(), 'on empty field.');

    $synonym_entity = $this->createNode();
    $this->assertSynonymsExtract(array(
      LANGUAGE_NONE => array(
        0 => array(
          'target_id' => entity_id('node', $synonym_entity),
        ),
      ),
    ), array(entity_label('node', $synonym_entity)), 'on a field that holds one value.');

    // Testing processEntityFieldQuery().
    $this->assertProcessEntityFieldQuery(array(), $this->randomName(), 'on empty field.');

    $tag = $this->randomName();
    $meta_data = array();
    $meta_data[] = array(
      'items' => array(
        LANGUAGE_NONE => array(
          array(
            'target_id' => entity_id('node', $this->createNode($tag . $this->randomName())),
          ),
          array(
            'target_id' => entity_id('node', $this->createNode()),
          ),
        ),
      ),
      'expected' => TRUE,
    );
    $meta_data[] = array(
      'items' => array(
        LANGUAGE_NONE => array(
          array('target_id' => entity_id('node', $this->createNode())),
        ),
      ),
      'expected' => FALSE,
    );
    $meta_data[] = array(
      'items' => array(),
      'expected' => FALSE,
    );
    $this->assertProcessEntityFieldQuery($meta_data, $tag, 'on a field with values.');

    // Testing mergeEntityAsSynonym() method.
    $node = $this->createNode();
    $this->assertMergeEntityAsSynonym(array(), $node, 'node', array(array('target_id' => $node->nid)), 'on a node.');
  }

  /**
   * Supportive function.
   *
   * Create an entity of necessary entity type (in our test it's node).
   *
   * @param string $label
   *   Label to use for the entity that is about to be created
   * @param string $bundle
   *   Bundle to use for the entity that is about to be created
   *
   * @return object
   *   Fully loaded entity object of the just created entity
   */
  protected function createNode($label = NULL, $bundle = 'page') {
    if (is_null($label)) {
      $label = $this->randomName();
    }
    $entity = (object) array(
      'type' => $bundle,
      'title' => $label,
    );
    node_save($entity);
    return $entity;
  }
}